20459984

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{31189}}^1$

素因数の和:31238

約数の個数: 20

約数和(自身を含む): 40609380

約数和(自身を除く): 20149396

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 31189, 62378, 124756, 249512, 499024, 1278749, 2557498, 5114996, 10229992, 20459984]

約数ペア:

[(1, 20459984), (2, 10229992), (4, 5114996), (8, 2557498), (16, 1278749), (41, 499024), (82, 249512), (164, 124756), (328, 62378), (656, 31189)]